Radiator cap and plug



April 23, 19 29. v

RADIATOR CAP AND PLUG Filed Sept. l6,- 1925 33 flatter/n N. KRAMER 63 I Patented Apr. 23, 1929'.

UNITED STA RADIATOR on? Am) PLUG.

Application and September 16, 1925.

My present invention relates to plugs, caps or the like for automobile radiators and the like, and aims to devise means of the general character specified which are-simple in con struction, easy and ronvenient to fabricate, and which arevery convenient in use. Other advantages of the present invention will in part be pointed out hereinafter and will in part be obvious to those skilled in theart to which the present invention relates.

In the accompanyingspecification I shall describe, and in the annexed drawing show'an illustrative. embodiment of the present invention. It is, however, to be clearly understood that my invention is not limited to the specific embodiment-thereof herein shown: and described for purposes of illustration only.

Referring to the annexed drawing, wherein I have illustrated the aforesaidillustrative embodiment of the resent invention:

{Fig 1 is stop p an view of the aforesaid illustrative embodiment of the persent inven tion; V

Fig. '2 is a side elevation view of the same; and

Fig. 3 is a view said embodiment.

Referring now to I e aforesaid illustrativeembodiment of the; present invention, and

I more particularly to the drawing illustrating the same, the devices of the present invention \\'hich,-i't will be understood, are in the form in longitudinal section of of tools, are preferablymade of a resilientand compressible and expansihle material. For this purpose I prefer-t0 employ soft vulcanized rubber, since I have found that this matcrial is very suitable for the intended pur- )ose. 1 Referring to, the drawin 10 indicates the main body portion of the p ug, cap or the like for automobile radiators or the like made ,in accordancewith the principles of the present invention and whichisapplied to the radiator inlet and outlet while the same is being tested under water. which obviously necessitates an airtight joint. The main body portion 10 is hollow, being provided with the recess or ca vity IL The main body portion 10 is likewise tapered, as indicated by reference character 12, and is provided with the bottom portion 13, all as more clearly shown in Fig. 3 of the drawing.

Just as the outer surface 14 of the main tapered, as indiated at 12,

body portion 10 is proper admissionof the plug outlet to whichitniay be applied. ln certain;

or outlet to .cause the edge of such inlet or Serial No. 56,566.

soalso the 15, the taper of the surface 1:3 being slightly less in degree than the taper The. bottom ind icatcd by At 1.9 I

surface of the reference character 18.

the foregoing description; Likewise the cavity 11 tapered, as indicate-(lat of the surface. 14,

sothat the thickness of the main body portion; '10 d minishes more or loss conliuuouslv froth 1. the upper edge 16 to the bottom surface 17..,

cavity-ll has been have indicated a shoulder which H likewise has the tapered surfacefzu. At21 is.-f lower tapered ledge or portion for.

foresaid illustra tive. embodiment of the present invention, has, it is believed, beenn'iade sufliciently clear in manner of using the devicefor the purposes of the present invention skilled in the art to lnmariredas follows the like during a test, tion hasthe cap a pering surface 15 with, which the will be clear to those which the same relates.

such inlet or outlet porpphed over the same by be-= cap isprOvided, the latter will readily fit over-j such inlet or outlet. At the same-time the provision of the shoulder -19 about a proper lit of the ca] outlet to which the l-Vhertg, on the oil: used as a plug duri same is applied.

of the radiator to which the device is to be applied. lhe ta instances t'heopening of the inlet which the device is applied is large. enough to This gives the holps'to bring; overthe inlet orcr' hand. the device is to he.

ug the test, the lower end.

' .13 ofthe plug is inserted in the inlet or outlet" -9o l-lpermits the outlet to be" bear against the tapered lowerso as to render-such fluid formed externally-as 'tight seal when applied within an opening n to constitute an air-tightiseal- \rhen aphe' applied to a wide variety of purposes either as a minor as a plug, particularly to the inlet or outlet of an automobile radiator.

()ther advantages of the present invention will readily occur to those skilled in the art to which the present invention relates.

li'hat I claim. as my invention is':

1. .As atenqmrary closure dee'icefor use in testing automobile and' like, radiators immersed in'a fluid, a combined sealingplug and cap in the form of .a hollow, open -en ded memher'of readily eompressihle'and relatively imperviousfmaterial, said member being .so

' ltqconstitutc an airthe radiator and hemg so formed internally plied over a connection :emnnmhieating with the interior of the radiator. 2.v 1A temporary, closure;device for use 11\ testing an autmi'iohile radiator 0-1-1 thelike for leaks \vhile'such auton'iohile. radiators or the like is sulm'ierged' in part atlea'st in' a liquid medim'n, comprising ayplug of resilient material adapted to lit either."within or (er a 'fluid' connection communicating" it-h the interior of such automobile radiator'orthe like eomn'iunieation snh stantially,air-tight so that by the appl-iea tion of' air or other fluid pressure admitted to the interior-of sueh au't nnohile radiator or the like hy mea'ns ofranother fluid connection eomn'mnhatiug with the interior ofsueh automohile radiator or the 'like'the 'prescnee of the leak orflcaks in such automobileradiator or the like may be determined. V

3. A temporary closure device for use in testing anautomobileradiator or the like for. V leaks while such automob le radiator orthe 40 like is submerged in part at least in a liquid medium, comprising a over a. fluid connection co'nnnunieating with the interimiof such automol iile radiator or the like so as to render sueh fluid eouinumiea tion sulistantiallyair-tight. so that hy the application of air or other fluid pressure admitted to the interior of such lt tt(llll()l)llt.-lil.(ll-' ator or the. like liy means of anothertiuid eonneetion communicating with the interior of sueh automohile radiator or the like the pres-' hollow plug of resiln -ient material adaptedeto tit either within or by thc'applie'ation-ot 'air. orother fluid pres-h sure admitted to the interior ofasuch aut o mohile radiator or the jll-keby other fluid connection eommu-nigtatlng with the interior of sut'h automobile;radiator or theehke' the-presence of the leak or'leaks in v such uUtQlTlObllQgRfltllfltOI or the, like ,may'he 5. As a temporary closure-device for use fin testing automobile.

mersed in.a= tluid,-.a.eomhi ied, sealing: plug and cap in the form of-a hollow, openlend ed means'ot anand like radiators immeinher of readily conipressibleia-nd relatire impervious material 'a-itl l'l'itfilllbtli having an annular ofi'.-set poi on.adjaeenttlieopen end and heingvso formed externally as to con stitute an air-tight seal whenapplied Within an openin in the radiator ,and being so formed interni'lll as to eonstit it n air-tight sealwhen applied over a connection eommu iiieating with the interior of the r'adiatol.

' (5, As a temporary closure device for usein testini: automobile and like; radiators immcrscd in a fluid, a combined sealing plug and capin th form QfiH- l'iOllPW open'ended fly impervious mate-riah-said' memherhaving an" annular ott-setportion adjae it the open end and the interio'r .andjexterioi tapered'so-as-m constitute anf aii t when applied \Y: hi 'n an opg sningilintlle radiator a'n'd heir": so-foruuul internally to eonmemher ofread-ilyemhpremihl and relative- --st.itnte. an air-tigihjt;seal." vhen Lap yhed over;

a connection eommuniea in}; with t ie interiol'.

of the radiator. l

name. to this specification this24th day of July, 192?. a a a a p KAMER'.

In testimony, whereotf,- I' liai't-Y'sig ned my 

